At demonstrations in Atlanta,Georgia,and Miami,Florida people protested to demand a cleaner environment.

VOA: special.2010.04.21

It just feels a little cleaner, but it's going to depend.

它让人感觉更清晰点，但也要看情况。

哈佛公开课 - 计算机科学课程节选

It's a lot cleaner than New York.

那里也比纽约干净。

纽约和洛杉矶不一样 - SpeakingMax英语口语达人

Acquiring this simple and non-polluting form of electric light,he points out, promotes education, public health,economic security and a cleaner environment.

VOA: standard.2009.12.13

So I don't know don't, John, I would argue if I'd written this better, I would have had a method that returned the x- and the y- value, and it would be cleaner to go after it that way.

我会去辩论这么写是不是更好，我也可以写一个，返回x坐标和y坐标的方法,这么做可能会更清楚一点，这是很棒的缩写，好。

麻省理工公开课 - 计算机科学及编程导论课程节选

In its 40th year, Earth Day is intended to bring awareness about what people can do in their everyday lives to contribute to a cleaner more sustainable planet.

VOA: standard.2010.04.25

"You are helping us to build a cleaner, brighter future and a stronger more prosperous economy and my administration and our country will support you in that difficult work,"

VOA: standard.2009.03.23

Kai Eide said a cleaner election and a credible government will go a long way toward closing what he called the "gap" between the Afghan people and officials in Kabul.

VOA: standard.2009.10.23

Secretary of State Hillary Clinton has announced a plan to get cleaner-burning cooking stoves into developing countries.

VOA: special.2010.09.27

(VOICE) She recited a long list of relatives who have left Moscow in recent days, hoping to find cleaner air and cooler temperatures.

VOA: standard.2010.08.10

India hopes a massive increase in cleaner nuclear power will help it to check greenhouse gas emissions and cut its dependence on oil, most of which it imports.

VOA: standard.2009.09.29